E21NRFT-LDF-M1-00 by Kollmorgen

The Kollmorgen E21NRFT-LDF-M1-00 is a precision bipolar stepper motor in the E Hybrid Stepper Motors series, designed for high-reliability industrial automation. With a 1.8° step angle and 24 VDC rated voltage, this model delivers consistent positioning performance across demanding motion control tasks. The industrial LDF frame design combines structural rigidity with thermal efficiency, enabling sustained operation at its rated speed of 1500 RPM. Compatibility with Microstepping & stepper drivers ensures fine resolution and smooth motion profiles, making the motor ideal for applications requiring both speed and torque control. Manufactured by Kollmorgen, the E21NRFT-LDF-M1-00 offers a robust solution for modern machine architectures.

The motor’s technical specifications reflect a balance of power and precision. It operates on a rated current of 1.4–1.5 A and features a two-phase bipolar stepper winding optimized for minimal heat generation and high torque density. The 5 mm shaft diameter supports straightforward coupling to ancillary equipment, and the laminated rotor with single rotor stack minimizes cogging torque while improving dynamic response. The enclosure type is specified as LDF industrial, providing protection and ease of mounting, and the unit is compatible with Power Max II series mounting interfaces. The operating temperature range of -10 to +50°C ensures reliable performance across diverse environmental conditions.

Operational features of the E21NRFT-LDF-M1-00 emphasize precise control and adaptability. The motor delivers 200 steps per revolution for high positional accuracy, and the double shaft configuration allows simultaneous power transmission to multiple loads. An integrated encoder mounting provision facilitates closed-loop feedback, enhancing system stability and preventing missed steps. The combination of microstepping compatibility and optimized winding design produces smooth torque curves at low speeds, reducing vibration and noise. A laminated rotor design further limits energy losses, contributing to efficient continuous-duty operation.

System integration is streamlined through adherence to standard industrial interfaces and mounting footprints, making it straightforward to retrofit into existing automation platforms. The compatibility with microstepping drivers and Power Max II interface allows designers to leverage advanced control features such as torque ripple suppression and programmable current limits. Target applications include pick-and-place robotics, semiconductor handling equipment, and precision packaging systems where repeatable motion and rapid acceleration are essential. The E21NRFT-LDF-M1-00 motor’s combination of environmental resilience, mechanical precision, and electrical efficiency positions it as a versatile component for next-generation industrial automation deployments.